Inhaler.



PATENTED MAY 3, 1904.

G. L. BENNETT.

INHALER.

APPLIGATION HLBD sBPT.3,19os.

N0 MODEL.

MZK/@wey l UNITED STATES Patented May 3, 1904..

GEORGE L. BENNETT, OF CHICAGO, ILLINOIS.

INHALER.

SPECFICATION forming part of Letters Patent No. 759,152,6131386. May 3, 1904. Application tiled September 3, 1903. Serial No. 171,828. lNe model.)

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Be it knol-vn that I, (irnonen L. BENNETT, a citizen of the United States, residing at Chicago, county or' Cook, State of illinois, have invented a new and useful Improvement in Nasal Inhalers, ot' which the following' is a specilication.

My invcntionis related to a class oi' devices in use by surgeons and dentists in adminstering anesthetic vapors to patients while undergoing surgical operations; and the objects ot' my invention are, iirst, to provide a small light-Weight inhaler to be used in conjunction with the vaporizer for which I was recently allowed a patent; second, to provide an inhaler having means i'or regulating thetlow of air saturated with anesthetic vapors in lixed quantities, the air having been previously impregnated with ltitty percent. oi' anesthetic vapor; third, to provide an inhaler that lmay be connected with a hose and the branches inserted in the nostrils oi: the patient, thus permitting him to breath fresh air along with the vapor. 'I attain these objects by a mechanism illustrated in the accompanying drawings.

Figure l is a side elevation. Fig. 2 is a vertical sectional view showing' all parts. Fig. 3 is a cross-section out on line 3 3. Fig. 4iis a cross-section cut on line i 4.

Similar characters refer to similar parts throughout the several views.

My invention consists in providing a small tube A, of any suitable material, with two branches a a at the upper end having small orifices at each terminal. One-halt` inch from the lower end a collar l is iiXed to the tube.

The collar is provided with five or more inl dentations l l, Fig'. 3, on its periphery. rI he lower end of the tube is capped over a'. Two apertures are drilled in the cap e d, Fig. 3, one in the center, d, is provided with a screwthread, the other, e, near the circumference is lei't open and constitutes a valve-port. Indiarubber disks are slipped over the ends of the branches c c. rlhe object of these devices will be explained hereinafter.

The lower section B isa tube one and onehalf inches long having two annular beads o on the lower part adapted to hold a hose m. The upper end is capped over L and forms a valve-seat. An aperture (Z is drilled in the center. Four otheralfiertures are drilled, jf g 7L, circumferentially the same distance from the center as the valve-port c in the upper cap a', the apertures varying in diameter from one-eighth to one .thirty-second or' an inch. An annular ring af, larger in external diameter than the tube, having' its outersurface milled, is fixed to the tube B, forming a socket adapted to lit the lower end oi' the upper part A. A spring is fixed vertically in the side of the ring ai radially opposite to the largest aperture in the cap rlhe said spring is adapted to engage the indentations on the collar l. The indcntations on the collar are placed circumi'erentially equal distances apart, there being one more indentation than apertures. When the port c is set over spot 1.', Fig. 4, it will be closed.

The upper part Bis placed in the socket formed by the ring A screw d is inserted through the lower tube into the upper and lower caps, this holding all parts iirmly t0- gether. The indentations in the collar are marked on the surface of the tube e O l 2 3 1i, representing from one to four per cent. and closed, respectively. As the upper part oil the inhaler is turned the spring will snap out and in the indentation with friction enough to hold it in any position.

In operation the inhaler is fixed in the hose and attached to the anesthetic-generater. The patient having been placed in a suitable position for operation, the quantity of vapor is determined by the inhaler-Valve being set to the percentage-mark required, the branches of inhaler are inserted in the nostrils, and the vapor allowed to flow. Then the patient has been rendered unconscious, the valve may be set at a smaller quantity or ljust suicient to hold the patient in an unconscious condition. It' it should be desirable to exclude all air from the nostrils, the rubber disks can be moved up so as to close the nostrils.

The two-per-centopening in the inhaler is large enough for using chloroform, and in most all cases one per cent. will be found sui'- iicient. When giving ether, the largest opening or four per cent. will be found a safe quantity.

IOO

It frequently happens that patients become frightened at the formidable appliances used, like the mouthpiece with an india-rubber aircushion; but they have no fear when my simf ple device is used. Little children will hold it in their nostrils until they become unconscious and drop it.

I am aware that this valve is not wholly new. HenceI do not claim it broadly; neither do I Wish to confine myself to the specific numbers of apertures in the Valve.

Having described my invention and its operation, what I claim, and wish to secure by Letters Patent, is

1. The combination in a nasal inhaler of the upper tube having two branches provided with flexible disks, an annular collar provided with notches on its periphery, adapted to engage a spring, a tube having a cap on its lower end provided with a port and means for inserting a screw, substantially as set forth.

2. The combination in a nasal inhaler of the lower tube having a cap on its upper end pierced with apertures Varying in diameter, and means for inserting a screw, said apertures being arranged circumferentially, an annular ring tiXed to said tube and forming a socket on the upper end, a spring fixed vertically on its side adapted to engage the notches on said collar, means for attachinga hose, a screw inserted through both caps adapted to hold them in contact, and a rotatable upper tube in said socket, substantially as described.

GEORGE L. BENNETT.

Witnesses:

M. E. GREGG, H. E. EvANs. 

